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Updated: Apr 17, 2026
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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
Published on: July 19, 2019
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[Gray matter lesions and cognitive impairment in multiple sclerosis]
Izumi Kawachi1, Etsuji Saji, Masatoyo Nishizawa
1Department of Neurology, Brain Research Institute, Niigata University.
Rinsho Shinkeigaku = Clinical Neurology
|February 13, 2015
Summary
Multiple sclerosis (MS) involves gray matter (GM) damage, not just white matter (WM) lesions. Understanding GM pathology is key to predicting cognitive impairment and developing targeted MS therapies.
Area of Science:
- Neuroscience
- Immunology
- Pathology
Context:
- Multiple sclerosis (MS) traditionally viewed as a white matter (WM) disease.
- Emerging evidence highlights significant gray matter (GM) involvement in MS.
- Cortical demyelination and neurodegeneration occur even in normal-appearing GM.
Purpose:
- To investigate the role and characteristics of gray matter pathology in multiple sclerosis.
- To explore the relationship between GM lesions and cognitive impairment in MS patients.
- To emphasize the need for understanding GM lesion structure for therapeutic development.
Summary:
- MS pathology extends beyond white matter (WM) to include significant gray matter (GM) demyelination and neurodegeneration.
- Gray matter (GM) lesions are present throughout all stages of MS and may predict cognitive impairment.
- Cognitive deficits in MS can manifest early and are linked to both WM and GM lesions.
Impact:
- Shifts the understanding of MS pathology from solely WM to include critical GM involvement.
- Suggests GM lesions as potential biomarkers for cognitive decline in MS.
- Underscores the importance of investigating GM pathology for novel therapeutic strategies in multiple sclerosis.
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